题目内容：
What does our atmosphere do?[A] It absorbs the heat from the ground and sends it to the Sun.
[B] It absorbs the heat from the Sun and emits it back to the Earth.
[C] It absorbs the heat from the Sun and emits it the same way.
[D] It absorbs the heat the ground emits and sends some of it back to the Earth.
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答案解析：